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Total questions: 25
Worksheet time: 35mins
Name
Class
Date
1.
7. A public library asked every 10th person who entered to name the type of book they were getting
a)
Biased
b)
Unbiased
2.
3. A hospital wants to open a gym. They ask the night-shift ER staff when they would use the gym.
a)
Biased
b)
Unbiased
3.
1. Carlos wants to know the favorite sport of people at his school so he asks his baseball team.
a)
Biased
b)
Unbiased
4.
Ana wants to know the average student’s opinion of the tardy policy at her school. Which group of students should she survey in order to achieve the most accurate results?
a)
thirty students who are often tardy
b)
thirty students who are rarely tardy
c)
thirty of her friends
d)
thirty randomly selected students from her school
5.
You are doing a survey to find out what kids really think about school lunch and you stand outside a lunchroom and ask every 5th person from every grade.
a)
Biased (Unfair)
b)
Unbiased (Fair)
6.
You want to know your town’s favorite fast-food restaurant. You randomly ask 30 people their preference as they leave a McDonald’s restaurant.
a)
Biased (Unfair)
b)
Unbiased (Fair)
7.
At Dominique's Donuts the number of donut holes in a bag can vary. Help Dominique find the mode.
12,10,10,10,13,12,11,13,10
12,10,10,10,13,12,11,13,10
a)
13
b)
12
c)
11
d)
10
8.
Ervin bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the range of Ervin's scores?
a)
193
b)
127
c)
60
d)
66
9.
What is the mode?
a)
# happening the most
b)
the average
c)
biggest - smallest
d)
the middle #
10.
Find the mean of these numbers:
5,11,2,12,4,2
5,11,2,12,4,2
a)
4.1
b)
6
c)
4.5
d)
4
11.
Find the median of these numbers:
4,2,7,4,3
4,2,7,4,3
a)
2
b)
5
c)
7
d)
4
12.
Find the mean of these numbers:
2, 57, 38, 42, 6
2, 57, 38, 42, 6
a)
29
b)
38
c)
50
d)
145
13.
What is the range?
a)
average
b)
biggest-smallest
c)
the middle #
d)
# happening the most
14.
What is the range?
a)
average
b)
biggest-smallest
c)
the middle #
d)
# happening the most
15.
What is the mode?
a)
# happening the most
b)
the average
c)
biggest - smallest
d)
the middle #
16.
What is the mode?
a)
# happening the most
b)
the average
c)
biggest - smallest
d)
the middle #
17.
To find the mean of a set of numbers, add up all the items and divide by...
a)
2
b)
The minimum
c)
The maximum
d)
The number of items
18.
To find the mean of a set of numbers, add up all the items and divide by...
a)
2
b)
The minimum
c)
The maximum
d)
The number of items
19.
In order to find the median, the data must be sorted from least to greatest first.
a)
True
b)
False
20.
In order to find the median, the data must be sorted from least to greatest first.
a)
True
b)
False
21.
How would you describe the mean?
a)
difference
b)
average
c)
middle
d)
most repeated number
22.
2. Which of the following best describes the process of finding the interquartile range for a set of data?
a)
Add the biggest and smallest numbers.
b)
Place the numbers in order from least to greatest and find the middle.
c)
Find the difference between the maximum and the minimum.
d)
Subtract Q1 from Q3.
23.
What is the range of the data shown?
a)
85
b)
90
c)
80
d)
70
24.
What is the median of the data?
a)
200
b)
100
c)
90
d)
140
25.
Which restaurant has a higher median wait time?
a)
Lucy's Steakhouse
b)
Gary's Grill
c)
They are the same
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